Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32k fails to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

cat cve-2019-0859.json

Vendor: Microsoft
Product: Win32k
CVSS: 7.8
EPSS (exploit probability): 4.2%
Status: kev
CISA patch-by (BOD 22-01): May 3, 2022
Published: November 3, 2021
Source: https://nvd.nist.gov/vuln/detail/CVE-2019-0859

Microsoft Win32k fails to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

Added to CISA’s Known Exploited Vulnerabilities catalog on 2021-11-03. Required action per CISA: Apply updates per vendor instructions. Due date: 2022-05-03.

This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.